CN202052451U - Device for enriching and separating xenon in air through carbon molecular sieves - Google Patents
Device for enriching and separating xenon in air through carbon molecular sieves Download PDFInfo
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- CN202052451U CN202052451U CN2011200203296U CN201120020329U CN202052451U CN 202052451 U CN202052451 U CN 202052451U CN 2011200203296 U CN2011200203296 U CN 2011200203296U CN 201120020329 U CN201120020329 U CN 201120020329U CN 202052451 U CN202052451 U CN 202052451U
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Abstract
The utility model discloses a device for enriching and separating xenon in the air through carbon molecular sieves, which is formed by connecting an air sampling device, a xenon purifier, a measuring source box and a chromatograph quantification pipe. The xenon is finally enriched on carbon molecular sieve columns arranged in a tail stage absorption tank through the xenon purifier consisting of four stages of purification tank groups and hollow fiber films, the xenon enriched in the absorption tank is desorbed at high temperature, an impurity removing tank, an absorption tank and a radon removing tank are utilized for removing CO2, H2O, krypton and radon in the air, 13X type molecular sieves are contained in the impurity removing tank, the carbon molecular sieves are contained in the absorption tank and the radon removing tank, the hollow fiber films are adopted for removing O2 and N2, and the xenon is concentrated and is then injected into the measuring source box and the chromatograph quantification pipe for carrying out measurement. The device can sample and enrich the xenon in the air and can separate other impurities from the xenon.
Description
Technical field
The utility model belongs to environmental protection and nuclear chemical industry field, is used for the monitoring equipment of a kind of gas radioactive xenon isotope of environment, the device of xenon in particularly a kind of carbon molecular sieve concentration and separation gas.
Background technology
Enrichment and separation device for xenon, the main patented technology that exists is to adopt cryogenic separation, as obtain the method (patent No. 200610121283.0) of krypton and/or xenon by the cryogenic separation of air, obtain krypton and/or xenon by the cryogenic separation of air, be suitable for extensive and industrialized production.Other relevant patent, relevant with active carbon, but do not mention separate xenon.As: (1) a kind of absorbent charcoal adsorber (patent No. 200810062397.1), adopt negative ion generating device to produce anion, in time will adsorb saturated active carbon by anion and carry out the oxidized activating disintegrating and regeneration, active carbon can be adsorbed forever continuously.(2) moving bed activated carbon absorption-desorption device (patent No. 86104137) adopts continuously, segmentation, multistage inclination moving bed structure, moving bed is turned to absorption, the regeneration cycle of finishing active carbon with classification in the absorption-desorber of integral body with the class sealing groove.
The utility model content
The purpose of this utility model is to provide the device of xenon in a kind of carbon molecular sieve concentration and separation gas, the rich sampling of airborne xenon, enrichment can be separated other impurity of removing in the xenon.
The purpose of this utility model is achieved in that the device of xenon in a kind of carbon molecular sieve concentration and separation gas, comprise in the following at different levels jars of groups in the decleaning tank of removal of impurities bed is housed, in be equipped with that carbon molecular sieve removes the radon bed remove the radon jar, in the adsorption tanks and the heater of carbon molecular sieve adsorbent bed are housed, advance at following at different levels jars of each tank bodies of group of connection, the magnetic valve that cooperates serial connection on the pipeline of outlet respectively, hand-operated valve and measurement source capsule, chromatogram quantification pipe and aqueous phase separation device, air compressor machine will pass through surge tank through exhaust pipe successively through the air that air cleaner enters, the aqueous phase separation device, flowmeter, hollow-fibre membrane is to inject the level Four purifying jar group of xenon purification devices, air compressor machine, surge tank, the aqueous phase separation device, flowmeter and hollow-fibre membrane constitute the air sampling device, level Four purifying jar group is by first order purifying jar group, second level purifying jar group, third level purifying jar group and fourth stage purifying jar group constitute, flow integrator is installed on the flowmeter, be pressed into the air of xenon purification devices successively by first order purifying jar group by air compressor machine, second level purifying jar group, each tank body in third level purifying jar group and the fourth stage purifying jar group is also purified step by step with enrichment xenon wherein, the air that the xenon purification devices will be enriched with xenon injects measurement source capsule and chromatogram quantification pipe, first order purifying jar group is made of a pair of elementary decleaning tank and a pair of elementary adsorption tanks serial connection, second level purifying jar group and third level purifying jar group are respectively successively by a second level decleaning tank, remove a radon jar and a second level adsorption tanks serial connection formation, fourth stage purifying jar group is made of a third level level decleaning tank and third level adsorption tanks serial connection; Described xenon purification devices is by vavuum pump, heater, fan, level Four purifying jar group and control device are formed, its blow vent of a decleaning tank in the first order purifying jar group is communicated with atmosphere by first filter, the second purifying jar group and the third level purifying jar group radon jar that removes separately is communicated with the helium transfer pipeline that is communicated with adsorption tanks separately by second filter respectively, decleaning tank in the fourth stage purifying jar group is by the 3rd filter and the helium pipeline connection that is communicated with its adsorption tanks, on above-mentioned each helium transfer pipeline, a pressure sensor is installed respectively, described control device is by the helium carrier gas jar, above-mentioned magnetic valve, hand-operated valve and pressure sensor, flow controller, filter, automatic controller constitutes, vavuum pump is evacuated the chromatogram quantification pipe by exhaust pipe and will mixes the sample device by the chromatogram quantification pipe and is evacuated with the measurement source capsule, and be evacuated by the adsorption tanks of the 4th filter with first order purifying jar group, by the 5th filter the adsorption tanks in the above-mentioned second purifying jar group are evacuated, by the 6th filter the adsorption tanks in third level purifying jar group and the fourth stage purifying jar group together are evacuated, on the exhaust pipe that is communicated with chromatogram quantification pipe and vavuum pump, another pressure sensor is installed, the helium carrier gas jar makes its helium be divided into three strands by the helium transfer pipeline, wherein one is imported in first order purifying jar group and the second level purifying jar group by in the evacuated adsorption tanks of vavuum pump by the first flow controller, another strand inputs in third level purifying jar group and the fourth stage purifying jar group separately by in the evacuated adsorption tanks of vavuum pump by second flow controller, the 3rd strand then inputs to the chromatogram quantification pipe by adsorption tanks and the 7th filter in the fourth stage purifying jar group, mix the sample device and measure source capsule, every grade of purifying jar group heats by heater, the pipeline that in first order purifying jar group, is communicated with every pair of decleaning tank, be communicated with and being communicated with on the pipeline that removes radon jar and decleaning tank separately on the pipeline of every pair of adsorption tanks and in third level purifying jar group and the fourth stage purifying jar group temperature sensor be installed respectively, also cooperate on every grade of purifying jar group fan, above-mentioned magnetic valve are installed, heater, flow controller, temperature sensor and pressure sensor carry out regulation and control work by automatic controller.
The utility model is enriched on the interior carbon molecular sieve post of adsorption tanks xenon, be enriched in xenon in the adsorption tanks in high temperature (220-300 ℃) desorb down, be equipped with in the utilization 13X type molecular sieve decleaning tank, in the adsorption tanks of carbon molecular sieve are housed and remove the radon jar and remove airborne CO
2And H
2O, krypton and radon adopt hollow-fibre membrane to remove O
2And N
2, xenon concentrated, and source capsule inject to be measured in the back and the chromatogram quantification pipe is measured.
Enrichment factor of the present utility model is greater than 10
6, the decontamination factor of radon is greater than 10
5, can be with the about 20m of efficient sampling volume
3Airborne xenon (concentration 0.087ppm), concentrated and purified is volume 10Ml (xenon concentration is approximately 17%), adopts surge tank, aqueous phase separation device, hollow-fibre membrane and 13X type molecular sieve to remove H
2O, hollow-fibre membrane and 13X molecular sieve are removed CO
2, hollow-fibre membrane is removed N
2And O
2, carbon molecular sieve adsorption column (jar) removes Rn, adopts low temperature and normal temperature enrichment in active carbon and the carbon molecular sieve, and the high temperature desorb from purifying, obtains measuring xenon body source through level Four purifying jar component.Therefore, the utility model can separate other impurity of removing in the xenon, and volume ratio be less with the rich sampling of airborne xenon, enrichment, and is in light weight, right
133Xe minimum detectable concentration can reach 0.25Bq/m
3, automation mechanized operation degree height, the function software friendly interface, the sampling efficiency height, open-air adaptability is good.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation that the level Four purifying jar group in the utility model is connected with xenon purification devices (and measurement mechanism);
The structural representation that Fig. 2 is connected with air sampling device (and measurement mechanism) for the level Four purifying jar group in the utility model.
The specific embodiment
The device of xenon in a kind of carbon molecular sieve concentration and separation gas, as depicted in figs. 1 and 2, comprise in the following at different levels jars of groups in the decleaning tank of removal of impurities bed is housed, in be equipped with that carbon molecular sieve removes the radon bed remove the radon jar, in the adsorption tanks and the heater of carbon molecular sieve adsorbent bed are housed, advance at following at different levels jars of each tank bodies of group of connection, the magnetic valve that cooperates serial connection on the pipeline of outlet respectively, hand-operated valve and measurement source capsule 12, chromatogram quantification pipe 13 and aqueous phase separation device 23, air compressor machine 21 will pass through surge tank 22 through exhaust pipe successively through the air that air cleaner 20 enters, aqueous phase separation device 23, flowmeter 24, hollow-fibre membrane 25 is to inject the level Four purifying jar group of xenon purification devices, air compressor machine 21, surge tank 22, aqueous phase separation device 23, flowmeter 24 and hollow-fibre membrane 25 constitute the air sampling device, level Four purifying jar group is by first order purifying jar group, second level purifying jar group, third level purifying jar group and fourth stage purifying jar group constitute, flow integrator 26 is installed on the flowmeter 24, be pressed into the air of xenon purification devices successively by first order purifying jar group by air compressor machine 21, second level purifying jar group, each tank body in third level purifying jar group and the fourth stage purifying jar group is also purified step by step with enrichment xenon wherein, the air that the xenon purification devices will be enriched with xenon injects measurement source capsule 12 and chromatogram quantification pipe 13, first order purifying jar group is made of a pair of elementary decleaning tank 3 and a pair of elementary adsorption tanks 5 serial connections, second level purifying jar group and third level purifying jar group are respectively successively by a second level decleaning tank 6, remove radon jar 7 and a second level adsorption tanks 8 serial connection formations, fourth stage purifying jar group is made of a third level level decleaning tank 90 and a third level adsorption tanks 91 serial connections; Described xenon purification devices is by vavuum pump 17, heater, fan 18, level Four purifying jar group and control device are formed, its blow vent of a decleaning tank in the first order purifying jar group is communicated with atmosphere by first filter 201, the second purifying jar group and the third level purifying jar group radon jar that removes separately is communicated with the helium transfer pipeline that is communicated with adsorption tanks separately by second filter 202 respectively, decleaning tank in the fourth stage purifying jar group is by the 3rd filter 203 and the helium pipeline connection that is communicated with its adsorption tanks, on above-mentioned each helium transfer pipeline, a pressure sensor 4 is installed respectively, described control device is by helium carrier gas jar 1, above-mentioned magnetic valve, hand-operated valve and pressure sensor, flow controller, filter, automatic controller constitutes, vavuum pump 19 is evacuated chromatogram quantification pipe 13 by exhaust pipe and will mixes sample device 14 by chromatogram quantification pipe 13 and is evacuated with measurement source capsule 12, and be evacuated by the adsorption tanks of the 4th filter 18 with first order purifying jar group, by the 5th filter 17 adsorption tanks in the above-mentioned second purifying jar group are evacuated, by the 6th filter 16 adsorption tanks in third level purifying jar group and the fourth stage purifying jar group together are evacuated, on the exhaust pipe that is communicated with chromatogram quantification pipe 13 and vavuum pump 19, another pressure sensor 15 is installed, helium carrier gas jar 1 makes its helium be divided into three strands by the helium transfer pipeline, wherein one is imported in first order purifying jar groups and the second level purifying jar group by in the evacuated adsorption tanks of vavuum pump by first flow controller 2, another strand inputs in third level purifying jar group and the fourth stage purifying jar group separately by in the evacuated adsorption tanks of vavuum pump by second flow controller 200, the 3rd strand then inputs to chromatogram quantification pipe 13 by adsorption tanks in the fourth stage purifying jar group and the 7th filter 11, mix sample device 14 and measure source capsule 12, every grade of purifying jar group heats by heater, the pipeline that in first order purifying jar group, is communicated with every pair of decleaning tank 3, be communicated with and being communicated with on the pipeline that removes radon jar and decleaning tank separately on the pipeline of every pair of adsorption tanks 5 and in third level purifying jar group and the fourth stage purifying jar group temperature sensor 10 be installed respectively, also cooperate on every grade of purifying jar group fan 18, above-mentioned magnetic valve are installed, heater, flow controller, temperature sensor 10 and pressure sensor carry out regulation and control work by automatic controller.
Be equipped with in the utility model adopts the removal of impurities bed decleaning tank, in be equipped with carbon molecular sieve remove the radon bed remove the radon jar and in the adsorption tanks of carbon molecular sieve adsorbent bed are housed, 13X type molecular sieve removes H
2O, hollow-fibre membrane and 13X type molecular sieve remove CO
2, hollow-fibre membrane removes O
2, carbon molecular sieve removes radon, and xenon is enriched on the carbon molecular sieve post.Be enriched in the xenon desorb under high temperature (220-300 ℃) in the adsorption tanks, remove impurity (CO with molecular sieve and carbon molecular sieve
2And H
2O, krypton and radon), the xenon back of concentrating is measured.The utility model main operating parameters: during (1) work, first order adsorption tanks in the level Four purification devices are-5 ℃ to-20 ℃ samplings, about the xenon in the adsorption and enrichment atmospheric sample, sample time 2-12h, following and the atmospheric sample for the face of land, the flow of setting is respectively 1 ~ 1.5m
3/ h and 1-3.0m
3/ h; (2) during desorb, the temperature of second level adsorption tanks, third level adsorption tanks and fourth stage adsorption tanks remains on 20-40 ℃, and the elution flow of first order adsorption tanks is 1dm
3/ min, elution volume are 60dm
3, the elution flow of second level adsorption tanks is 150cm
3/ min, elution volume are 3.0dm
3, the desorb volume of third level adsorption tanks is about 60cm
3About, the purifying time 8h of apparatus system; (3) regenerating molecular sieve in the purifying jar group tank bodies at different levels, the filler of first order adsorption tanks is a molecular sieve, and regeneration temperature is 250-350 ℃, and the regeneration temperature of other adsorption tanks and decleaning tank is 220-250 ℃; (4) gasmetry volume source unit is mL, radioactivity survey time 10h.
The filling and the activating and regenerating of the utility model adsorption tanks filler: the filler in the adsorption tanks is carbon molecular sieve and molecular sieve, before changing filler, carbon molecular sieve is calcination 2h in 200 ℃ of Muffle furnaces, and molecular sieve is at 500 ℃ of following calcination 2h, put into drier and be cooled to room temperature, the dress post of weighing.The interior filler of the adsorption tanks of newly packing into is stopped using when surpassing 10 days, need under atmosphere of inert gases, regenerate, regeneration temperature in the adsorption tanks is 220-260 ℃, and the regeneration temperature of the decleaning tank in the first order jar group is 260-350 ℃, and each the tank body temperature in other at different levels jars of groups is 220-260 ℃; Tank body vacuumizes or after inert gas elution regeneration finished, (by fan) cooling was stand-by continuously in heating.
Using method of the present utility model:
Start air compressor machine and begin sampling, shutdown automatically after integrated flux reaches setting value, record sampling flow, sample volume begin sampling time, environment temperature, relative humidity and place.When gathering under the face of land sample, use the drilling rod gas sample collector, method of operating is to punch with a solid drilling rod of six corner angle identical with drill pipe diameter earlier, puts into the sampling drilling rod that there is cavity inside after the dial-out, the admission line of air compressor machine is linked to each other with the drilling rod venthole, and other operation is the same.
According to pre-determined purifying flow process parameter, pass through operation interface, set heating-up temperature at different levels in the control software, heat time heating time, eluent gas flow, elution time, magnetic valve action and vavuum pump action, adsorption column is installed in tank body carries out desorb in the purification unit, regeneration prime adsorption column (jar) and removal of impurities post (jar) in desorb.
The xenon-133 gas for preparing is collected in and measures in the source capsule, places gamma ray spectrometer or changes the indoor measurement radioactive xenon isotope counting of β/γ coincidence measurement (net counting rate N) over to, derives each isotopic activity (A (iXe)) according to instrument efficient.
In chromatography system source apparatus pipeline of the present utility model residual gas is arranged, record chromatogram sample introduction pressure (Pd) is measured chromatographic peak area (A), calculates the concentration (C) of xenon in the residual air by correction factor, calculates the rate of recovery (η).
Close adsorption tanks, heater and all switches, close chromatogram and helium carrier gas jar.
Calculate the xenon rate of recovery with (1) formula, calculate radioxenon activity concentration in the sample point air with (2) formula.
(1) in the formula:
hIn-sample preparation the process, the rate of recovery of Xe, %;
V (Xe)Pure xenon volume in the-sample, cm
3
V a The volume of air of-Xe system one-level adsorption column (jar) absorption, m
3
R (Xe)Airborne xenon volume under the-status of criterion, 0.087cm
3/ m
3
In the sample collection moment, the isotopic activity of Xe is sample collection mean activity concentration constantly divided by sampling volume in the sample
A v (Bq/m
3):
(2) in the formula:
A v The isotopic activity concentration of radioactivity Xe in air during-sampling, Bq/m
3
N-Measuring Time
Δ tIn, corresponding gamma-rays full energy peak net area, count;
eThe detection efficient of-apparatus measures sample is calculated by the Labsocs theory;
P g -gamma-ray branching ratio;
Δ t-g spectrometer is measured the duration of sample, s;
A On average-Measuring Time
Δ tIn, the g spectrometer is measured the isotopic mean activity of Xe in the sample, Bq;
A 4 -g spectrometer is measured sample zero hour
t 4 The time, contain the isotopic total activity of Xe in the sample, Bq;
A 2 -sample is gathered the finish time
t 2 The time, contain the isotopic total activity of Xe in the sample, Bq;
lThe isotopic decay coefficient of-Xe, l=ln (2)/T
1/2, 1/s;
T 1/2 The isotopic half-life of-Xe, s.
8 application examples
Use this utility model face of land gas and soil gas are carried out sampling analysis, sampling parameters, purifying parameter and experimental result are seen following analysis contrast table:
The analysis contrast table of face of land gas and soil gas
| Index parameter | Face of land gas | Soil gas |
| Gas flow (m 3/h) | ～2.0 | ＞0.8 |
| Sample volume (m 3) | ～22 | ＞8.0 |
| Sample time (h) | ～10 | ～10 |
| Sample recovery rate (%) | ＞73 | ＞70 |
| Concentration coefficient | 1.4×10 6 | 8.0×10 5 |
| MDC for 133Xe by β-γ（mBq/m 3） | ＜0.25 | ＜0.85 |
| Remove the radon coefficient | ＞10 5 | ? |
| Final sample volume (mL) | ～7 | ? |
| The purifying time (h) | 5.5 | ? |
| Quantity of sample handling (individual/day) | 2 | ? |
This device to the enrichment factor of xenon greater than 10
6, the decontamination factor of radon is greater than 10
5, can be with the about 20m of efficient sampling volume
3Airborne xenon (concentration 0.087ppm), concentrated and purified is volume 8ml (xenon concentration is greater than 10%).Along with Application of Nuclear Technology is increasingly extensive, nuclear facilities quantity such as China's nuclear power station will heighten, monitoring requirements to radioxenon in the environment is obvious, every of the external like product of import is more than 1,000,000 dollars, performance of this device and instrumentation degree belong to the our times top standard, and its domestic manufacturing valency is every 2,000,000 RMB approximately.
Claims (1)
1. the device of xenon in the carbon molecular sieve concentration and separation gas, comprise automatic controller, the decleaning tank of removal of impurities bed is housed in the following at different levels jars of groups, in be equipped with that carbon molecular sieve removes the radon bed remove the radon jar, in the adsorption tanks and the heater of carbon molecular sieve adsorbent bed are housed, advance at following at different levels jars of each tank bodies of group of connection, the magnetic valve that cooperates serial connection on the pipeline of outlet respectively, hand-operated valve and measurement source capsule (12), chromatogram quantification pipe (13) and aqueous phase separation device (23), it is characterized in that: air compressor machine (21) will pass through surge tank (22) through exhaust pipe successively through the air that air cleaner (20) enter, aqueous phase separation device (23), flowmeter (24), hollow-fibre membrane (25) is to inject the level Four purifying jar group of xenon purification devices, air compressor machine (21), surge tank (22), aqueous phase separation device (23), flowmeter (24) and hollow-fibre membrane (25) constitute the air sampling device, level Four purifying jar group is by first order purifying jar group, second level purifying jar group, third level purifying jar group and fourth stage purifying jar group constitute, flow integrator (26) is installed on the flowmeter (24), be pressed into the air of xenon purification devices successively by first order purifying jar group by air compressor machine (21), second level purifying jar group, each tank body in third level purifying jar group and the fourth stage purifying jar group is also purified step by step with enrichment xenon wherein, the air that the xenon purification devices will be enriched with xenon injects measurement source capsule (12) and chromatogram quantification pipe (13), first order purifying jar group is made of a pair of elementary decleaning tank (3) and a pair of elementary adsorption tanks (5) serial connection, second level purifying jar group and third level purifying jar group are respectively successively by a second level decleaning tank (6), remove radon jar (7) and a second level adsorption tanks (8) serial connection and constitute, fourth stage purifying jar group is made of a third level level decleaning tank (90) and a third level adsorption tanks (91) serial connection; Described xenon purification devices is by vavuum pump (17), heater, fan (18), level Four purifying jar group and control device are formed, its blow vent of a decleaning tank in the first order purifying jar group is communicated with atmosphere by first filter (201), the second purifying jar group and the third level purifying jar group radon jar that removes separately is communicated with the helium transfer pipeline that is communicated with adsorption tanks separately by second filter (202) respectively, decleaning tank in the fourth stage purifying jar group is by the 3rd filter (203) and the helium pipeline connection that is communicated with its adsorption tanks, on above-mentioned each helium transfer pipeline, a pressure sensor (4) is installed respectively, described control device is by helium carrier gas jar (1), above-mentioned magnetic valve, hand-operated valve and pressure sensor, flow controller, filter, automatic controller constitutes, vavuum pump (19) is evacuated chromatogram quantification pipe (13) by exhaust pipe and will mixes sample device (14) and measure source capsule (12) by chromatogram quantification pipe (13) and is evacuated, and be evacuated by the adsorption tanks of the 4th filter (18) with first order purifying jar group, by the 5th filter (17) adsorption tanks in the above-mentioned second purifying jar group are evacuated, by the 6th filter (16) adsorption tanks in third level purifying jar group and the fourth stage purifying jar group together are evacuated, on the exhaust pipe that is communicated with chromatogram quantification pipe (13) and vavuum pump (19), another pressure sensor (15) is installed, helium carrier gas jar (1) makes its helium be divided into three strands by the helium transfer pipeline, wherein one is imported in first order purifying jar group and the second level purifying jar group by in the evacuated adsorption tanks of vavuum pump by first flow controller (2), another strand inputs in third level purifying jar group and the fourth stage purifying jar group separately by in the evacuated adsorption tanks of vavuum pump by second flow controller (200), the 3rd strand then inputs to chromatogram quantification pipe (13) by adsorption tanks in the fourth stage purifying jar group and the 7th filter (11), mix sample device (14) and measure source capsule (12), every grade of purifying jar group heats by heater, the pipeline that in first order purifying jar group, is communicated with every pair of decleaning tank (3), be communicated with and being communicated with on the pipeline that removes radon jar and decleaning tank separately on the pipeline of every pair of adsorption tanks (5) and in third level purifying jar group and the fourth stage purifying jar group temperature sensor (10) be installed respectively, also cooperate on every grade of purifying jar group fan (18), above-mentioned magnetic valve are installed, heater, flow controller, temperature sensor (10) and pressure sensor carry out regulation and control work by automatic controller.
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|---|---|---|---|
| CN2011200203296U CN202052451U (en) | 2011-01-21 | 2011-01-21 | Device for enriching and separating xenon in air through carbon molecular sieves |
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| CN112557157A (en) * | 2021-02-28 | 2021-03-26 | 中国工程物理研究院核物理与化学研究所 | Method for separating, purifying and collecting xenon in air sample based on specific device |
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| CN117531333A (en) * | 2024-01-08 | 2024-02-09 | 西安瑞恒测控设备有限公司 | Filtering system of gas chromatograph in krypton-xenon detection |
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2011
- 2011-01-21 CN CN2011200203296U patent/CN202052451U/en not_active Expired - Fee Related
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| CN105181430A (en) * | 2015-09-06 | 2015-12-23 | 中国人民解放军63653部队 | Pre-enrichment system apparatus for xenon in instrumented gas sample |
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| CN108735324A (en) * | 2017-11-23 | 2018-11-02 | 江苏核电有限公司 | A kind of off-line equipment for the cooling of spent fuel transport container helium purification |
| CN108152219A (en) * | 2017-12-29 | 2018-06-12 | 亚申科技研发中心（上海）有限公司 | The real-time detection method and device of impurity in synthesis gas |
| CN109665506A (en) * | 2018-12-21 | 2019-04-23 | 北京放射性核素实验室 | Atmosphere xenon enrichment and purification method, device and the method for preparing carbon molecular sieve |
| CN109665506B (en) * | 2018-12-21 | 2020-11-06 | 北京放射性核素实验室 | Atmospheric xenon enrichment and purification method and device |
| CN109939538A (en) * | 2019-04-12 | 2019-06-28 | 中国原子能科学研究院 | The Quick Separation System and method of Kr and Xe in complicated fission product |
| CN112557158A (en) * | 2021-02-28 | 2021-03-26 | 中国工程物理研究院核物理与化学研究所 | Separation, purification and collection device for xenon in air sample |
| CN112557126A (en) * | 2021-02-28 | 2021-03-26 | 中国工程物理研究院核物理与化学研究所 | Normal-temperature mobile xenon sampling pre-concentration system, method and application thereof |
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| CN114272402A (en) * | 2021-11-09 | 2022-04-05 | 郑州圣华药物食品技术开发有限公司 | Technical management scheme for guaranteeing safe and effective operation of xenon excimer disinfection instrument |
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